octg 中文意思是什麼
octg
解釋
石油管材-
Terminology of imperfections in octg and line pipe
石油管材常見缺陷術語 -
Nondestructive testing method for octg liquid penetrant flaw detection for nonferrous magnetic thread
油井管無損檢測方法非鐵磁體螺紋滲透探傷 -
Assessment procedure for octg quality
油井管產品質量評價方法 -
Specializes in the production of octg linepipe, oilcasing and tube,
詢問自己身邊的朋友在看 -
We are an international trading company based in western india. we specialize in trading of flat rolled steel, long drawn steel, indian tea, octg etc
我們是國際貿易公司總部設在西印度.我們專門從事鋼材貿易的單位，漫長鋼、印度茶、油井等
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